Code already exists

-- url of the page with the problem -- : the-authors-club.com
-- HikaShop version -- : latest version
-- Joomla version -- : 3.1.5
-- PHP version -- : 5.3.27
-- Browser(s) name and version -- : Internet Explorer 9
-- Error-message(debug-mod must be tuned on) -- : A product with this code already exists.

Hi Jerome,

It looks like I have another problem - this time uploading new products on the front-end as a vendor.
I created a test vendor account to make sure I could upload products. I went to the vendor control panel to upload a new product. I uploaded a photo, entered all the details for the new product, but when I uploaded the file I received an error message saying: "A product with this code already exists."

I renamed the file and tried to upload it again and received that error message again. Any idea what could be causing this?

Thanks.

I used Firefox and the same error happened, so it's not just Internet Explorer.

I add a new product from the front-end as a vendor (because I want to test a vendor account). Allowed file types are PDF, MOBI, and EPUB.
I've attached 3 screenshots: uploading the file, after I upload the file - no file is there, and the error message
The file won't even upload from the front-end and it still gives me that error message.

So do I need to specify a product name for the file when I upload it?

Hi.

I sell digital files on my website which are books, so I need to upload them. I can upload them from the administrator end with no problem. I'd like for my vendors to be able to upload their files from the front-end so that I don't have to upload their files for them.

When I upload files on the admin end, I don't use a name for the file in the upload area, but I do name them in the main area. I thought that would work on the front-end for my vendors.
Is it possible at all to upload files on the front end? If I need to, I can let you look at my configuration.

Thank you.